I’m sure you’ve come across sites which post links to images or just show the image thumbnails and you need to click on them if you want to see the full image, which usually open in a separate page. And if the images are in high resolution, they take good time to load too.

Unlinker is a Firefox add-on which adds a “Convert in page” option to your right click which when clicked converts those links into images right there on that page. Even high resolution images are resized and displayed accordingly. You could also add it to the Firefox toolbar and use it from there.

As you can see in the above screenshot, it adds a convert in page option along with the other options to the right click. When I click on it, I get the following photos displayed right on that page.